/Engine/Plugins/MeshPainting/Source/MeshPaintingToolset/Public/MeshPaintHelpers.h
template<typename T> void ApplyBrushToVertex ( const FVector & VertexPosition, const FMatrix & InverseBrushMatrix, const float BrushRadius, const float BrushFalloffAmount, const float BrushStrength, const T & PaintValue, T & InOutValue )